[INFO] fetching crate tsfile-writer 0.2.1...
[INFO] checking tsfile-writer-0.2.1 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate tsfile-writer 0.2.1 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate tsfile-writer 0.2.1 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tsfile-writer 0.2.1
[INFO] finished tweaking crates.io crate tsfile-writer 0.2.1
[INFO] tweaked toml for crates.io crate tsfile-writer 0.2.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 51 packages to latest compatible versions
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v1.1.0)
[INFO] [stderr]       Adding hermit-abi v0.3.9 (available: v0.4.0)
[INFO] [stderr]       Adding ipnetwork v0.18.0 (available: v0.20.0)
[INFO] [stderr]       Adding ordered-float v1.1.1 (available: v4.3.0)
[INFO] [stderr]       Adding pnet v0.29.0 (available: v0.35.0)
[INFO] [stderr]       Adding pnet_base v0.29.0 (available: v0.35.0)
[INFO] [stderr]       Adding pnet_datalink v0.29.0 (available: v0.35.0)
[INFO] [stderr]       Adding pnet_macros v0.29.0 (available: v0.35.0)
[INFO] [stderr]       Adding pnet_macros_support v0.29.0 (available: v0.35.0)
[INFO] [stderr]       Adding pnet_packet v0.29.0 (available: v0.35.0)
[INFO] [stderr]       Adding pnet_sys v0.29.0 (available: v0.35.0)
[INFO] [stderr]       Adding pnet_transport v0.29.0 (available: v0.35.0)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.77)
[INFO] [stderr]       Adding thrift v0.14.2 (available: v0.17.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06e5d1ac73635dce88ce2656d7be5948d8ad17485adb6cad9fc85c975bc50aaa
[INFO] running `Command { std: "docker" "start" "-a" "06e5d1ac73635dce88ce2656d7be5948d8ad17485adb6cad9fc85c975bc50aaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06e5d1ac73635dce88ce2656d7be5948d8ad17485adb6cad9fc85c975bc50aaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06e5d1ac73635dce88ce2656d7be5948d8ad17485adb6cad9fc85c975bc50aaa", kill_on_drop: false }`
[INFO] [stdout] 06e5d1ac73635dce88ce2656d7be5948d8ad17485adb6cad9fc85c975bc50aaa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail_expr_drop_order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb96d4c5245fcd8fe06f69850dd5b5ccca1013d68b09aa3a072b15311b7aede3
[INFO] running `Command { std: "docker" "start" "-a" "cb96d4c5245fcd8fe06f69850dd5b5ccca1013d68b09aa3a072b15311b7aede3", kill_on_drop: false }`
[INFO] [stderr]    Compiling snap v1.1.1
[INFO] [stderr]     Checking tsfile-writer v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ChunkGroup` is never constructed
[INFO] [stdout]    --> src/writer/mod.rs:838:8
[INFO] [stdout]     |
[INFO] [stdout] 838 | struct ChunkGroup<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/writer/tsfile_writer.rs:310:25
[INFO] [stdout]     |
[INFO] [stdout] 310 |                     path.borrow(),
[INFO] [stdout]     |                         ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Borrow`, so calling `borrow` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ChunkGroup` is never constructed
[INFO] [stdout]    --> src/writer/mod.rs:838:8
[INFO] [stdout]     |
[INFO] [stdout] 838 | struct ChunkGroup<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/writer/tsfile_writer.rs:310:25
[INFO] [stdout]     |
[INFO] [stdout] 310 |                     path.borrow(),
[INFO] [stdout]     |                         ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Borrow`, so calling `borrow` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "cb96d4c5245fcd8fe06f69850dd5b5ccca1013d68b09aa3a072b15311b7aede3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb96d4c5245fcd8fe06f69850dd5b5ccca1013d68b09aa3a072b15311b7aede3", kill_on_drop: false }`
[INFO] [stdout] cb96d4c5245fcd8fe06f69850dd5b5ccca1013d68b09aa3a072b15311b7aede3